I had a hard time clearing a catalyst effiecency code the other day. After I left the battery unhooked for about 12 hours the codes cleared. If your radio presets don't erase then the capacitor in the computer is still holding power.
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04 Cobra
densecharger CAI
BBK off road X pipe
Custom Electronic Exhaust cut outs
Tuning via Diablo Predator
Ported and polished Throttle body and plenum
Line locker (for the smoke shows)
Stock boost
412 rwhp 379 rwtq
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